That could well be the case, and at this point the least surprising outcome. I think it'd be more interesting (and fun) for Havik to be the final boss, though, and unlocked after beating him (and thus finishing story mode). That would both allow the boss to be playable and give us an interesting/unique unrevealed new character.Boon's talked about wanting bosses to be playable. Injustice had no unplayable bosses. I really think Shinnok's going to be the final battle.